From 6bc9feff14a2524c4bb2bac533dfd874b1533e20 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 16 Oct 2007 18:38:25 -0400 Subject: [PATCH] ext4: Convert s_blocks_count to s_blocks_count_lo Convert s_blocks_count to s_blocks_count_lo This helps in finding BUGs due to direct partial access of these split 64 bit values Also fix direct partial access in ext4 code Signed-off-by: Aneesh Kumar K.V --- fs/ext4/super.c | 4 ++-- include/linux/ext4_fs.h | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index f9cb64c5010b..11e80f061cb2 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2667,7 +2667,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) if (test_opt(sb, MINIX_DF)) { sbi->s_overhead_last = 0; - } else if (sbi->s_blocks_last != le32_to_cpu(es->s_blocks_count)) { + } else if (sbi->s_blocks_last != ext4_blocks_count(es)) { unsigned long ngroups = sbi->s_groups_count, i; ext4_fsblk_t overhead = 0; smp_rmb(); @@ -2702,7 +2702,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) overhead += ngroups * (2 + sbi->s_itb_per_group); sbi->s_overhead_last = overhead; smp_wmb(); - sbi->s_blocks_last = le32_to_cpu(es->s_blocks_count); + sbi->s_blocks_last = ext4_blocks_count(es); } buf->f_type = EXT4_SUPER_MAGIC; diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h index f5d57c7c0dd7..d30d079a53e2 100644 --- a/include/linux/ext4_fs.h +++ b/include/linux/ext4_fs.h @@ -501,7 +501,7 @@ do { \ */ struct ext4_super_block { /*00*/ __le32 s_inodes_count; /* Inodes count */ - __le32 s_blocks_count; /* Blocks count */ + __le32 s_blocks_count_lo; /* Blocks count */ __le32 s_r_blocks_count; /* Reserved blocks count */ __le32 s_free_blocks_count; /* Free blocks count */ /*10*/ __le32 s_free_inodes_count; /* Free inodes count */ @@ -981,7 +981,7 @@ extern void ext4_inode_table_set(struct super_block *sb, static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es) { return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) | - le32_to_cpu(es->s_blocks_count); + le32_to_cpu(es->s_blocks_count_lo); } static inline ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es) @@ -999,7 +999,7 @@ static inline ext4_fsblk_t ext4_free_blocks_count(struct ext4_super_block *es) static inline void ext4_blocks_count_set(struct ext4_super_block *es, ext4_fsblk_t blk) { - es->s_blocks_count = cpu_to_le32((u32)blk); + es->s_blocks_count_lo = cpu_to_le32((u32)blk); es->s_blocks_count_hi = cpu_to_le32(blk >> 32); } -- 2.20.1